I have a two webpages. eventsCreated and createAnEvent. In createAnEvent, a form is used to allow users' inputs. The inputs are then stored to local storage with the following function:
document.addEventListener("DOMContentLoaded",docIsReady);
var createEvent;
function docIsReady(){
createEvent=localStorage.getItem("createEvent");
if (createEvent==null){
CreateEvent=[];
}
else {
createEvent=JSON.parse(createEvent);
}
}
function saveToStorage() {
var one;
var nameofevent=document.getElementById("name").value;
var pList=document.getElementsByName("pos");
var positions=[];
for (i=0; i<pList.length; i++){
positions.push(pList[i].value);
console.log(pList[i].value);
}
localStorage["X"]=JSON.stringify(positions);
var r=localStorage["X"];
r=JSON.parse(r);
//for (i=0; i<positions.length; i++){
//console.log(positions[i].value);
//}
var venue= document.getElementById("venue").value;
var date=document.getElementById("date").value;
var starttime=document.getElementById("timeStart").value;
var endtime=document.getElementById("timeEnd").value;
var contact=document.getElementById("contact").value;
var email=document.getElementById("email").value;
var desc=document.getElementById("desc").value;
one={"name":nameofevent,"pos":r,"venue":venue,"date":date,"timeStart":starttime,"timeEnd":endtime,"contact":contact,"email":email,"desc":desc};
createEvent.push(one);
localStorage.setItem("createEvent",JSON.stringify(createEvent));
//alert(JSON.stringifys(one));
//alert(one.pos[0]); //to get one position
return false;
}
I made createEvent an array so as to store the multiple inputs because there cannot be only one event created. In the eventsCreated page, I need to display the user inputs in a table that looks something like this :
<table border="1px" id="list">
<tr>
<th>Name of event</th>
<th>Positions</th>
<th>Venue</th>
<th>Date</th>
<th>Start Time</th>
<th>End Time</th>
<th>Points Awarded</th>
</tr>
</table>
I am not sure how to use javascript to get the event details that the user has entered in the createAnEvent page and display it in the table.
This is the javascript:
function addRow() {
var table = document.getElementById("list");
var one = JSON.parse(localStorage["createEvent"]);
for (var i=0; i<one.length; i++) {
var row = table.insertRow(i);
for (var j=0; j<=6; j++) {
var cell = row.insertCell(j);
}
cell[0].innerHTML = "one[0]";
cell[1].innerHTML = "one[1]";
cell[2].innerHTML = "one[1]";
cell[3].innerHTML = "one[3]";
cell[4].innerHTML = "one[4]";
cell[5].innerHTML = "one[5]";
cell[6].innerHTML = "one[6]";
}
}
I would use jquery to add elements to your page.
But you can use the dom if you like.
function addRow() {
var table = document.getElementById("list");
var one = JSON.parse(localStorage["createEvent"]);
for (var i = 0; i < one.length; i++) {
var this_tr = document.createElement("tr");
for (var j=0; j < one[i].length; j++) {
var this_td = document.createElement("td");
var text = document.createTextNode(one[i][j]);
this_td.appendChild(text);
this_tr.appendChild(this_td);
}
table.appendChild(this_tr);
}
This should work for you or close to it. You table is also wrong please correct it to this.
<table border="1px">
<thead>
<tr>
<th>Name of event</th>
<th>Positions</th>
<th>Venue</th>
<th>Date</th>
<th>Start Time</th>
<th>End Time</th>
<th>Points Awarded</th>
</tr>
</thead>
<tbody id="list">
</tbody>
</table>
See for examples:
http://www.w3schools.com/jsref/met_node_appendchild.asp
Related
I am trying to update a table once a button is clicked. I have created the table and the button with the following HTML code
<button type="button" onclick="calculateMatrixFact()">Calculate MF!</button>
<table id = "matrix_factorization">
<tr>
<th>User</th>
<th>Movie One</th>
<th>Movie Two</th>
</tr>
</table>
While the function that I am calling on the onclick event, is the following:
function calculateMatrixFact(){
var cache = CacheValues();
// split the array in two single arrays one per each user and movie
var user_matrix = createGroups(cache.mu, 2);
var score_matrix = createGroups(cache.ms, 2);
// remove the string user_name and movie_name
for (let i = 0; i < user_matrix.length && i < score_matrix.length; i++) {
user_matrix[i].shift();
score_matrix[i].shift();
}
var dot_matrix = [];
// perform the dot product
for (let j = 0; j < user_matrix.length; j++) {
for (let k = 0; k < score_matrix.length; k++) {
//console.log(user_matrix[j])
//console.log(score_matrix[k])
var dot_product = math.multiply(user_matrix[j], score_matrix[k]);
dot_matrix.push(dot_product);
}
}
// create the matrix and push back the string (first column of the table)
var dot_prod_matrix = createGroups(dot_matrix, 2);
dot_prod_matrix[0].unshift("Anna");
dot_prod_matrix[1].unshift("Jonny");
// from array to HTML table
fetch = document.getElementById('matrix_factorization');
for (var i = 0; i < dot_prod_matrix.length; i++) {
var newRow = fetch.insertRow(fetch.length);
for (var j = 0; j < dot_prod_matrix[i].length; j++) {
var cell = newRow.insertCell(j);
cell.innerHTML = dot_prod_matrix[i][j];
}
}
}
I think the problem is that I do not reset the table each time the button is clicked, is that right? How can I delete the old info and insert the new ones?
Here you can see the full code: https://jsfiddle.net/932ebu0v/7/
Because of this block in very last of your function:
fetch = document.getElementById('matrix_factorization');
for (var i = 0; i < dot_prod_matrix.length; i++) {
var newRow = fetch.insertRow(fetch.length);
for (var j = 0; j < dot_prod_matrix[i].length; j++) {
var cell = newRow.insertCell(j);
cell.innerHTML = dot_prod_matrix[i][j];
}
}
The fetch will get the existing table that having rows and you just inserting new rows into it.
Then, you can just clear whole table, re-add the header and insert the row (the clear and re-instantiation of the header would be done in one line of code !!):
fetch = document.getElementById('matrix_factorization');
// Just use this line to clear whole table and put back the header row
fetch.innerHTML = `<tr>
<th>User</th>
<th>Movie One</th>
<th>Movie Two</th>
</tr>`; // Put your whole <th> here.
// as for the rest, just let it be
for (var i = 0; i < dot_prod_matrix.length; i++) {
var newRow = fetch.insertRow(fetch.length);
for (var j = 0; j < dot_prod_matrix[i].length; j++) {
var cell = newRow.insertCell(j);
cell.innerHTML = dot_prod_matrix[i][j];
}
}
A simple solution would be to keep the 1st row in the <thead> element, given that it functions as the table's header. The rest of the rows go inside the <tbody> element. Only the table body is reset each time the button is clicked.
// access tbody (thead remains unimpacted)
var mfTableBody = document.querySelector('#matrix_factorization tbody');
mfTableBody.innerHTML = ''; // clear tbody
for (var i = 0; i < dot_prod_matrix.length; i++) {
// insert tr inside tbody
var newRow = mfTableBody.insertRow(fetch.length);
for (var j = 0; j < dot_prod_matrix[i].length; j++) {
var cell = newRow.insertCell(j);
cell.innerHTML = dot_prod_matrix[i][j];
}
}
<table id="matrix_factorization">
<thead>
<tr>
<th>User</th>
<th>Movie One</th>
<th>Movie Two</th>
</tr>
</thead>
<tbody></tbody>
</table>
I'm wanting every <tbody> tag will be gone as object index like first <tbody>->1 and second <tbody>-> 2 then inside the <tbody> every <tr> will be another object and that will be store into the <tbody> object and last the last part every <td> should have object key ("eiin", "name") inside the <tr> object
I'm trying using for loop multiple times but the console.log showing me okay but first object repeated 2 times.
Html
<section class="institute_list">
<table class="table" border="1">
<thead>
<tr>
<th scope="col">EIIN</th>
<th scope="col">Institute</th>
</tr>
</thead>
<tbody>
<tr>
<td>000000</td>
<td>Name</td>
</tr>
</tbody>
<tbody>
<tr>
<td>111111</td>
<td>Name 2</td>
</tr>
</tbody>
</table>
</section>
Javascript & jQuery
<script>
var rows = '', the_row='', the_xrow={}, tr_values={}, xtd_obj={};
tbodys = ($(".institute_list .table tbody").length);
for( var x=0; tbodys > x; x++) {
rows = $('.institute_list .table tbody:nth-child('+(x+1)+') tr').length;
the_row = '.institute_list .table tbody:nth-child('+(x+1)+') tr:nth-child(';
for( var i=1; rows >= i; i++ ){
tr_values = {
'eiin' : $(the_row+i+') td:first-child').text(),
'name' : $(the_row+i+') td:nth-child(2)').text()
};
the_xrow[i] = tr_values;
}
xtd_obj[x] = the_xrow;
}
console.log(xtd_obj);
</script>
and i'm getting this output in console
here
You may try the code below. You can separate every <tbody>,<tr>,<td> tag as a loop then make them a array.
var target = $(".institute_list > table");
var output = [];
$(target).find("tbody").each(function(i){
output[i] = {};
$(this).children().each(function(j){
output[i][j] = {};
$(this).children().each(function(k, td){
if ( k == 0 ) {
output[i][j]["eiin"] = $(td).text();
} else if ( k == 1 ) {
output[i][j]["name"] = $(td).text();
} else {
output[i][j][k] = $(td).text();
}
});
});
});
console.log(output);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section class="institute_list">
<table class="table" border="1">
<thead>
<tr>
<th scope="col">EIIN</th>
<th scope="col">Institute</th>
</tr>
</thead>
<tbody>
<tr>
<td>000000</td>
<td>Name</td>
</tr>
</tbody>
<tbody>
<tr>
<td>111111</td>
<td>Name 2</td>
</tr>
</tbody>
</table>
</section>
First, you need a closing </tbody> tag around the first element. Second I think you might be running into a scoping problem. You are defining the_xrow and tr_values outside of the for loops instead of inside of the for loops.
<script>
var xtd_obj={};
var tbodys = ($(".institute_list .table tbody").length);
for( var x=1; tbodys >= x; x++) {
var current_row = '.institute_list .table tbody:nth-child('+x+') tr';
var rows = $(current_row).length;
var the_row = current_row + ':nth-child(';
var the_xrow = {};
for( var i=1; rows >= i; i++ ){
the_xrow[i] = {
'eiin' : $(the_row+i+') td:first-child').text(),
'name' : $(the_row+i+') td:nth-child(2)').text()
};
}
xtd_obj[x] = the_xrow;
}
console.log(xtd_obj);
</script>
It's working for me
<script>
var rows = '', the_row='', xtd_obj={};
var tbodys = ($(".institute_list .table tbody").length)+1;
for( var x=1; tbodys > x; x++) {
rows = $('.institute_list .table tbody:nth-child('+(x+1)+') tr').length;
the_row = '.institute_list .table tbody:nth-child('+(x+1)+') tr:nth-child(';
var the_xrow = {};
for( var i=0; rows > i; i++ ){
var tr_values = {
'eiin' : $(the_row+i+1+') td:first-child').text(),
'name' : $(the_row+i+1+') td:nth-child(2)').text()
};
the_xrow[i] = tr_values;
}
xtd_obj[x] = the_xrow;
}
console.log(xtd_obj);
</script>
Here's the screenshot
This is my Html Table.
<table>
<thead>
<tr>
<th>First Name</th>
<th>Last Name</th>
<th>Email Id</th>
<th>Phone Number</th>
<th>Prefered Contact</th>
</tr>
</thead>
<tbody>
<tr>
<td>James</td>
<td>Miles</td>
<td>james#abcd.com</td>
<td>9876543210</td>
<td>email</td>
</tr>
<tr>
<td>John</td>
<td>Paul</td>
<td>john#abcd.com</td>
<td>9638527410</td>
<td>phone</td>
</tr>
<tr>
<td>Math</td>
<td>willams</td>
<td>Math#abcd.com</td>
<td>99873210456</td>
<td>phone</td>
</tr>
</tbody>
</table>
In this table there is Save Button.
<input type="button" id="txt" value="Save" />
Button Code
function tableToJson(table) {
var data=[];
var headers=[];
for (var i=0;
i < table.rows[0].cells.length;
i++) {
headers[i]=table.rows[0].cells[i].innerHTML.toLowerCase().replace(/ /gi, '');
}
for (var i=1;
i < table.rows.length;
i++) {
var tableRow=table.rows[i];
var rowData= {}
;
for (var j=0;
j < tableRow.cells.length;
j++) {
rowData[headers[j]]=tableRow.cells[j].innerHTML;
}
data.push(rowData);
}
return data;
}
When the click the save button, The html table data will stored in the .txt document without <table>,<tr>,<td>. The data storing format will be like below format.
(James,Miles,james#abcd.com,9876543210,email),
(John,Paul,john#abcd.com,9638527410,phone),
(Math,willams,Math#abcd.com,99873210456,phone)
Slightly clearer code than the above answer that works for any number of columns
var retContent = [];
var retString = '';
$('tbody tr').each(function (idx, elem)
{
var elemText = [];
$(elem).children('td').each(function (childIdx, childElem)
{
elemText.push($(childElem).text());
});
retContent.push(`(${elemText.join(',')})`);
});
retString = retContent.join(',\r\n');
jsfiddle with the full code
First of all, you have to create data which contains all user details.
userDetails='';
$('table tbody tr').each(function(){
var detail='(';
$(this).find('td').each(function(){
detail+=$(this).html()+',';
});
detail=detail.substring(0,detail.length-1);
detail+=')';
userDetails+=detail+"\r\n";
});
Then you need to save file:
var a=document.getElementById('save');
a.onclick=function(){
var a = document.getElementById("save");
var file = new Blob([userDetails], {type: 'text/plain'});
a.href = URL.createObjectURL(file);
a.download = "data.txt";
}
Here is a working solution: jsfiddle.
I have a table. I'd like to compare participants. If participant have several result points in the table, the script has to return sum of all participant's results. And so on for every participant.
The table is generated from database (".$row["pnt"]."".$row["station"]."".$row["res"]."):
Participant Station Points
aa Some1 1
dd Some1 2
aa sm2 3
dd sm2 4
bb sm3 5
ee sm3 6
For example I've to recieve such a new table:
aa - 4,
dd - 6,
bb - 5,
ee - 6
I've tried to do so:
$(document).ready(function () {
$("body").click(function () {
var rows = $("tbody tr");
var jo = [];
for (var i = 0; i < rows.length; i++) {
for (var j = 1; j <= rows.length; j++) {
var pnt1 = $(rows[i]).find(".pnt").html();
var stations1 = $(rows[i]).find(".station").html();
var pntR1 = $(rows[i]).find(".res").html();
if (pnt1 == $(rows[j]).find(".pnt").html()) {
pntR1 = parseInt(pntR1);
pntR2 = parseInt($(rows[j]).find(".res").html());
jo.push(pnt1, pntR1, pntR2);
break;
}
}
}
console.log(jo);
});
});
But I understood that I'm on a wrong way. Please, help me. I really appreicate if some one could help me on this issue.
Updated after comments:
<table id="pntsRes">
<thead>
<tr>
<th>Участники</th>
<th>Баллы</th>
</tr>
</thead>
<tbody>
<tr><td class="pnt">aa</td><td class="station">AES</td><td class="res">1</td></tr><tr><td class="pnt">dd</td><td class="station">AES</td><td class="res">2</td></tr>
<tr><td class="pnt">aa</td><td class="station">Science</td><td class="res">3</td></tr>
<tr><td class="pnt">dd</td><td class="station">Science</td><td class="res">4</td></tr><tr><td class="pnt">bb</td><td class="station">Аэродром</td><td class="res">5</td></tr>
<tr><td class="pnt">ee</td><td class="station">aeroport</td><td class="res">6</td></tr></tbody>
</table>
First, I would consider breaking your solution into three functions - one to extract the data from the HTML (which is a questionable practice in itself), one to transform the data, and one to output the new table. This way, your code is much more maintainable.
function getData() {
var rows = $("tbody tr");
var data = [];
rows.each(function(idx, row){
var pnt = row.find('.pnt').html(),
station = row.find('.station').html()),
res = parseInt(row.find('.res').html());
data.push(pnt, station, res);
});
}
Then I would consider something like this for the second method
// Pass the output from getData() into processData()
function processData(data){
var groupedKeys = {};
var groupedData = data.map(function(datum){
var name = datum[0];
var value = datum[2];
groupedKeys[name] = (groupedKeys[name] || 0) + (value || 0);
});
var transformedData = [];
Object.keys(groupedKeys).forEach(function(key){
transformedData.push([key, groupedKeys[key]]);
});
return transformedData;
}
The last method of course would need to be implemented by yourself, there's a ton that could be improved here, but it could be a good start.
I used an associative array (which is just an object in JavaScript) shown below:
http://jsfiddle.net/a5k6w300/
Changes I made:
var jo = [];
changed to an object instead of an array
var jo = {};
I also added the if(isNaN(object[key]) inside the inner loop in order to make sure that these didn't show as NaN as I continued adding them together.
$(document).ready(function () {
$("body").click(function () {
var rows = $("tbody tr");
var jo = {};
console.log(rows);
for (var i = 0; i < rows.length; i++) {
for (var j = 1; j <= rows.length; j++) {
var pnt1 = $(rows[i]).find(".pnt").html();
var stations1 = $(rows[i]).find(".station").html();
var pntR1 = $(rows[i]).find(".res").html();
if (pnt1 == $(rows[j]).find(".pnt").html()) {
pntR1 = parseInt(pntR1);
pntR2 = parseInt($(rows[j]).find(".res").html());
if(isNaN(jo[pnt1])){
jo[pnt1] = 0;
}
jo[pnt1] += pntR1;
break;
}
}
}
console.log(jo);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="pntsRes">
<thead>
<tr>
<th>Участники</th>
<th>Баллы</th>
</tr>
</thead>
<tbody>
<tr>
<td class="pnt">aa</td>
<td class="station">AES</td>
<td class="res">1</td>
</tr>
<tr>
<td class="pnt">dd</td>
<td class="station">AES</td>
<td class="res">2</td>
</tr>
<tr>
<td class="pnt">aa</td>
<td class="station">Science</td>
<td class="res">3</td>
</tr>
<tr>
<td class="pnt">dd</td>
<td class="station">Science</td>
<td class="res">4</td>
</tr>
<tr>
<td class="pnt">bb</td>
<td class="station">Аэродром</td>
<td class="res">5</td>
</tr>
<tr>
<td class="pnt">ee</td>
<td class="station">aeroport</td>
<td class="res">6</td>
</tr>
</tbody>
</table>
I want to create static/dynamic table. All cell <th> and the first two columns <td> of row are static. Content others cells I want to create dynamically using jQuery script.
I do not know how I start. Data to cell I have saved at JSON format (array) as:
{
"EX1":[["1","8","16","24"]],
"EX2":[["0","100200","109f","ffffffff"]]
}
HTML:
<table id="personDataTable" style="border: 1px #e3ffg3 solid; text-align: center;">
<tr class="bg02">
<th colspan="2">Name</th>
<th width="100px">Sensor 1</th>
<th width="100px">Sensor 2</th>
<th width="100px">Sensor 3</th>
<th width="100px">Sensor 4</th>
</tr>
<tr id="row1">
<td class="bg02">A</td>
<td class="bg02">Out64H</td>
<td>element[index]</td>
<td>element[index+1]</td>
<td>element[index+2]</td>
<td>element[index+3]</td>
</tr>
<tr id="row2">
<td class="bg02">R</td>
<td class="bg02">In128Birh</td>
<td>element[index]</td>
<td>element[index+1]</td>
<td>element[index+2]</td>
<td>element[index+3]</td>
</tr>
</table>
Static text in the every <tr> is necassary because text is not in json file.
Can ask for help with create javascript script?
Thanks very much
See this jsfiddle: http://jsfiddle.net/9zr6z70g/3/
The jQuery code is this way:
var data = {
"EX1":[["1","8","16","24"]],
"EX2":[["0","100200","109f","ffffffff"]]
};
var data1 = data.EX1[0];
var data2 = data.EX2[0];
$(document).ready(function(){
var row1cells = $("#row1 td");
var row2cells = $("#row2 td");
for (var index=0; index<4; index++) {
$(row1cells[index+2]).html(data1[index]);
$(row2cells[index+2]).html(data2[index]);
}
});
For multiple EX data, do it this way:
var exCount = 2;
var data = {
"EX1":[["1","8","16","24"]],
"EX2":[["0","100200","109f","ffffffff"]]
};
$(document).ready(function(){
for (var index=1; index<=exCount; index++) {
var cells = $("#row"+index+" td");
var values = data["EX"+index][0];
for (var jndex=0; jndex<4; jndex++) {
$(cells[jndex+2]).html(values[jndex]);
$(cells[jndex+2]).html(values[jndex]);
}
}
});
More details for multiple EX, see jsfiddle: http://jsfiddle.net/9zr6z70g/7/
This code is suitable for me, but variable EX are more than one hundred.
var data = {
"EX1":[["1","8","16","24"]],
"EX2":[["0","100200","109f","ffffffff"]]
};
var data1 = data.EX1[0];
var data2 = data.EX2[0];
$(document).ready(function(){
var row1cells = $("#row1 td");
var row2cells = $("#row2 td");
for (var index=0; index<4; index++) {
$(row1cells[index+2]).html(data1[index]);
$(row2cells[index+2]).html(data2[index]);
}
});
I tried modify the code using for loop following. This solution do not work correctly.
var data = {
"EX1":[["1","8","16","24"]],
"EX2":[["0","100200","109f","ffffffff"]]
};
var data1 = data.EX1[0];
var data2 = data.EX2[0];
$(document).ready(function(){
for (j=1; j<4; j++) {
var pom = "row"+[j]+"cells";
var pom2 = "#row"+[j]+" td";
var pom3 = "$"+'("'+pom2+'")';
for (var index=0; index<4; index++) {
$(pom3+[index+2]).html(data[j][index]);
}
}
});
Can ask for help with modify? Thanks